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Profile: Ningbo Yinzhou J&U International Co.,Ltd. is an exporter of specialty chemicals including solvent dyes, organic pigments and fine chemicals. Our product line includes pigments, solvent, acid, azoic, basic, direct, disperse, mordant, reactive, sulphur & vat dyes, light stabilizers and optical brighteners. Our solvent dyes include solvent yellow, orange, red, violet, blue, green, brown and black series. We offer light stabilizers such as UV-9, 531, 360, 329, 327, 320 & 1577, light stabilizer 622, 770, 783 & 944. We also supply optical brighteners such as optical brightenerB, WN, S, BA, DCB, PF, SWN, OB, BBU, CBS, KCB and FP.

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• Solvent Violet 36 (CAS: 61951-89-1)

• Solvent Violet 37 (CAS: 61969-50-4)

• Solvent Violet 8

IUPAC Name: 4-[(4-dimethylaminophenyl)-(4-methyliminocyclohexa-2,5-dien-1-ylidene)methyl]-N,N-dimethylaniline | CAS Registry Number: 52080-58-7
Synonyms: Pentamethylpararosaniline, Methyl Violet dye salt, C.I. Solvent Violet 8, CCRIS 5191, BRN 2759959, CID164877, ZINC04521520, NCGC00167495-01, LS-19890, LT03329824, 4,4'-((4-(Methylimino)-2,5-cyclohexadien-1-ylidene)methylene)bis(N,N-dimethylaniline), Aniline, 4,4'-((4-(methylimino)-2,5-cyclohexadien-1-ylidene)methylene)bis(N,N-dimethyl-, 1325-81-1, 1733-13-7, 53469-18-4

Molecular Formula:	C₂₄H₂₇N₃	Molecular Weight:	357.491280 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	3

InChIKey: AMPCGOAFZFKBGH-UHFFFAOYSA-N

• Solvent Yellow 114

IUPAC Name: 2-(3-hydroxyquinolin-2-yl)indene-1,3-dione | CAS Registry Number: 75216-45-4
Synonyms: Latyl Yellow 3G, Disperse Yellow 54, 3'-Hydroxyquinophthalone, 3-Hydroxyquinophthalone, NCIOpen2_003082, MolPort-001-814-724, C.I. DISPERSE YELLOW 54, CID24228, NSC64849, EINECS 231-474-9, NSC 64849, 2-(3-Hydroxy-2-quinolyl)-1,3-indanedione, 3-Hydroxy-2-(1,3-indandione-2-yl)quinoline, 1,3-Indandione, 2-(3-hydroxy-2-quinolyl)-, 1H-Indene-1,3(2H)-dione, 2-(3-hydroxy-2-quinolinyl)-, 2-(3-Hydroxy-2-quinolyl)-1H-indene-1,3(2H)-dione, 7576-65-0, 113041-80-8, 12223-85-7, 62395-98-6

Molecular Formula:	C₁₈H₁₁NO₃	Molecular Weight:	289.284840 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	4

InChIKey: FDTLQXNAPKJJAM-UHFFFAOYSA-N

• Solvent Yellow 21

IUPAC Name: chromium(3+); hydron; [(6E)-6-[(Z)-(3-methyl-5-oxo-1-phenylpyrazol-4-ylidene)hydrazinylidene]cyclohexa-2,4-dien-1-ylidene]methanediolate | CAS Registry Number: 5601-29-6
Synonyms: Acid yellow 121, Orasol Yellow GRLN, EINECS 227-022-5, CI 18690, 12220-52-9, 12220-77-8, 12220-85-8, 12220-90-5, 12235-24-4, 12270-05-2, 155067-80-4, 15977-59-0, 28084-27-7, 29991-00-2, 41579-63-9, 47872-95-7, 47872-97-9, 57486-05-2, 59459-52-8, 95409-74-8

Molecular Formula:	C₃₄H₂₅CrN₈O₆	Molecular Weight:	693.608400 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	12

InChIKey: IWMMUMZQFNYZFV-QWROSDLASA-K

• Solvent Yellow 56

IUPAC Name: N,N-diethyl-4-phenyldiazenylaniline | CAS Registry Number: 2481-94-9
Synonyms: Diethyl Yellow, Oil Yellow DE, Oil Yellow GA, Oil Yellow NB, Oil Yellow DEA, Oil Yellow ENC, Ceres Yellow GGN, Sudan Yellow GGN, Waxoline Yellow ED, Fat Yellow GGN, Oil Yellow 2635, Sico Fat Yellow P, Diethylaminoazobenzene, Oil Yellow E190, 4-(Diethylamino)azobenzene, p-(Diethylamino)azobenzene, Orient OIL Yellow GGS, Fast Oil Yellow 64403, N,N-Diethyl-4-aminoazobenzene, 4-Phenylazo-N,N-diethylaniline

Molecular Formula:	C₁₆H₁₉N₃	Molecular Weight:	253.342160 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	3

InChIKey: SJJISKLXUJVZOA-UHFFFAOYSA-N

• Solvent Yellow 72

IUPAC Name: 4-(2-methoxyphenyl)diazenyl-5-methyl-2-phenyl-4H-pyrazol-3-one | CAS Registry Number: 4645-07-2
Synonyms: C.I. Solvent Yellow 72, MolPort-002-338-992, CID62545, EINECS 225-074-3, STK382964, DAH1603675, 4-((o-Methoxyphenyl)azo)-3-methyl-1-phenyl-2-pyrazolin-5-one, 2-Pyrazolin-5-one, 4-((o-methoxyphenyl)azo)-3-methyl-1-phenyl-, 2,4-Dihydro-4-((2-methoxyphenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-one, 3H-Pyrazol-3-one, 2,4-dihydro-4-((2-methoxyphenyl)azo)-5-methyl-2-phenyl-, 3H-Pyrazol-3-one, 2,4-dihydro-4-(2-(2-methoxyphenyl)diazenyl)-5-methyl-2-phenyl-, 4-[(E)-(2-methoxyphenyl)diazenyl]-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, 109812-14-8, 355153-01-4, 61813-98-7

Molecular Formula:	C₁₇H₁₆N₄O₂	Molecular Weight:	308.334540 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	5

InChIKey: UXNFQAZIRFBOKO-UHFFFAOYSA-N

• Solvent Yellow 79 (CAS: 12237-31-9)

• Solvent Yellow 82 (CAS: 12227-67-7)

• Sudan I

IUPAC Name: (1Z)-1-(phenylhydrazinylidene)naphthalen-2-one | CAS Registry Number: 842-07-9
Synonyms: Grasal Orange, Spirit Orange, Sudan Yellow, Fast Orange, Pyronalorange, Dunkelgelb, Carminaph, Oil Orange, Fast Oil Orange, Soudan I, Fettorange lg, Cerotinorange G, Organol Orange, Stearix Orange, Fettorange R, Motiorange R, Fettorange IG, Scharlach B, Calcogas M, Fettorange 4a

Molecular Formula:	C₁₆H₁₂N₂O	Molecular Weight:	248.279280 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	3

InChIKey: ZONYAPYTDIVJGG-VLGSPTGOSA-N

• Sudan IV

IUPAC Name: (1Z)-1-[[2-methyl-4-(2-methylphenyl)diazenylphenyl]hydrazinylidene]naphthalen-2-one | CAS Registry Number: 85-83-6
Synonyms: Scharlachrot, Lipid crimson, Scarlet oil, Scarlet red, Oil Scarlet, Hidaco Oil Red, Resoform Red G, Waxoline Red O, Fat Ponceau R, Lacquer Red V, Organol Red B, Rubrum scarlatinum, Waxoline Red OM, Waxoline Red OS, Candle Scarlet B, Candle Scarlet G, Tertrogras Red N, Lacquer Red VS, Somalia Red IV, Sudan P

Molecular Formula:	C₂₄H₂₀N₄O	Molecular Weight:	380.441800 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	5

InChIKey: KMDLOETUWUPGMB-BXCCFQQFSA-N

• Transparent Violet B

IUPAC Name: 1-hydroxy-4-(4-methylanilino)anthracene-9,10-dione | CAS Registry Number: 81-48-1
Synonyms: Irisol base, Resiren Blue TR, Oil Violet IRS, Oil Violet ZIRS, Waxoline Purple A, Resolin Blue RRL, Resorin Blue RRL, Sumikaron Violet B, Disperse Blue 72, Solvent violet 13, Resiren Blue TR-P, D&C Violet 2, ALIZUROL PURPLE, D+C Violet No. 2, Alizarine Irisol R Base, Dispersol Violet B-G, 11092 Violet, Ahcoquinone Blue IR Base, Alizarine Violet 3B Base, CI Disperse Blue 72

Molecular Formula:	C₂₁H₁₅NO₃	Molecular Weight:	329.348700 [g/mol]
H-Bond Donor:	2	H-Bond Acceptor:	4

InChIKey: LJFWQNJLLOFIJK-UHFFFAOYSA-N

• Transparent Yellow 3G

IUPAC Name: (4E)-5-methyl-4-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)methylidene]-2-phenylpyrazol-3-one | CAS Registry Number: 4702-90-3
Synonyms: EINECS 225-184-1, 190086-12-5, 3H-Pyrazol-3-one, 4-((1,5-dihydro-3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-ylidene)methyl)-2,4-dihydr o-5-methyl-2-phenyl-, 3H-Pyrazol-3-one, 4-((1,5-dihydro-3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-ylidene)methyl)-2,4-dihydro-5-methyl-2-phenyl-, 4-((1,5-Dihydro-3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-ylidene)methyl)-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one, 59459-29-9, 61969-52-6

Molecular Formula:	C₂₁H₁₈N₄O₂	Molecular Weight:	358.393220 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	4

InChIKey: QPAPQRFSPBUJAU-CPNJWEJPSA-N

• Victoria Blue B

IUPAC Name: [4-[bis(4-dimethylaminophenyl)methylidene]naphthalen-1-ylidene]-phenylazanium chloride | CAS Registry Number: 2580-56-5
Synonyms: Victoria blue B, Tertrophene Blue, Basic blue 26, Calcozine Blue B, Hecto Blue B, Hekto Blue B, Victoria Blue BA, Victoria Blue BN, Victoria Blue BP, Victoria Blue BS, Victoria Blue BX, Victoria Blue FB, Symulex Blue BOF, Basic Blue B, Victoria Lake Blue B, Victoria Pure Blue B, ADC Victoria Blue B, Victoria Pure Blue BC, Hidaco Victoria Blue B, Mitsui Victoria Blue B

Molecular Formula:	C₃₃H₃₂ClN₃	Molecular Weight:	506.080280 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	3

InChIKey: LLWJPGAKXJBKKA-UHFFFAOYSA-N

• Victoria Blue R

IUPAC Name: [4-[bis(4-dimethylaminophenyl)methylidene]naphthalen-1-ylidene]-ethylazanium chloride | CAS Registry Number: 2185-86-6
Synonyms: Victoria Blue RS, Victoria Lake Blue R, BASIC BLUE K, Hidaco Victoria Blue R, Victoria Blue- R, Aizen Victoria Blue BOH, Basic Blue 11, C.I. Basic Blue 11, EINECS 218-572-7, NSC 11240, 234176_SIAL, C.I. Basic Blue 11 (7CI,8CI), NSC11240, C.I. 44040, CI 44040, LS-89959, ST5411583, N,N'-(N,N'-Tetramethyl)-1-diaminodiphenylnaphthylaminomethane hydrochloride, (4-((4-(Dimethylamino)phenyl)(4-(ethylamino)-1-naphthyl)methylene)cyclohexa-2,5-dien-1-ylidene)dimethylammonium chloride, Methanaminium, N-(4-((4-(dimethylamino)phenyl)(4-(ethylamino)-1-naphthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, chloride

Molecular Formula:	C₂₉H₃₂ClN₃	Molecular Weight:	458.037480 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	3

InChIKey: JEVGKYBUANQAKG-UHFFFAOYSA-N

• 2-(3-Oxobenzo[b]thien-2(3h)-Ylidene)-Benzo(b)thiophene-3(2h)-One

IUPAC Name: (2Z)-2-(3-oxo-1-benzothiophen-2-ylidene)-1-benzothiophen-3-one | CAS Registry Number: 522-75-8
Synonyms: Thioindigo, Isothioindigo, Durindone Red B, Antinolo Red B, Helindon Red BB, Thioindigo Red B, Thioindigo Red S, Tetra Pink B, Durindone Red BP, Ciba Pink B, Tina Pink B, Heliane Red 5B, Tyrian Red A-5B, Vat Red 5B, 4,4'-Diisothioindigo, Durindone Printing Red B, C.I. Vat Red 41, EINECS 208-336-1, BRN 0088277, CID3033973

Molecular Formula:	C₁₆H₈O₂S₂	Molecular Weight:	296.363520 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	2

InChIKey: JOUDBUYBGJYFFP-NXVVXOECSA-N

• 1,4-Bis(methylamino)anthraquinone

IUPAC Name: 1,4-bis(methylamino)anthracene-9,10-dione | CAS Registry Number: 2475-44-7
Synonyms: Acetate Blue B, Cibacet Blue BR, Resiren Blue TB, Setacyl Blue BS, Teraprint Blue R, Artisil Blue BRP, Solvent Blue 78, Diaresin Blue K, Disperse Blue 14, Disperse Blue 78, Cilla Fast Blue B, Macrolex Blue FR, Solvent Blue 93, Celliton Fast Blue B, Disperse Blue 110, Supracet Fast Blue 2G, C.I.Disperse Blue 14, Duranol Brilliant Blue G, Serisol Brilliant Blue G, Blue 14

Molecular Formula:	C₁₆H₁₄N₂O₂	Molecular Weight:	266.294560 [g/mol]
H-Bond Donor:	2	H-Bond Acceptor:	4

InChIKey: QOSTVEDABRQTSU-UHFFFAOYSA-N

• 1,4-Diamino-2,3-dichloroanthraquinone

IUPAC Name: 1,4-diamino-2,3-dichloroanthracene-9,10-dione | CAS Registry Number: 81-42-5
Synonyms: EINECS 201-348-8, ZINC04531154, 9,10-Anthracenedione, 1,4-diamino-2,3-dichloro-, 12227-83-7

Molecular Formula:	C₁₄H₈Cl₂N₂O₂	Molecular Weight:	307.131520 [g/mol]
H-Bond Donor:	2	H-Bond Acceptor:	4

InChIKey: KZYAYVSWIPZDKL-UHFFFAOYSA-N

• 3-(diethylamino)-7-Imino-7h-(1)benzopyrano(3',2':3,4)pyrido(1,2-A)benzIMIDAZOLE-6-Carbonitrile

Synonyms: MolPort-001-674-859, ZINC04074882, EINECS 257-885-3, CID104185, AK-968/15361396, 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile, 3-(Diethylamino)-7-imino-7H-(1)benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile, 7H-(1)Benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile, 3-(diethylamino)-7-imino-, 7H-(1)Benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile,3-(diethylamino)-7-imino-

Molecular Formula:	C₂₃H₁₉N₅O	Molecular Weight:	381.429860 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	5

InChIKey: FXFIDVQMNRVEGQ-UHFFFAOYSA-N

• 3-Methyl-6-(p-Toluidino)-3h-Dibenz(f,Ij)isoQUINOLINE-2,7-Dione

Synonyms: ChemDiv1_022437, Oprea1_123265, STOCK1N-26630, MolPort-000-628-457, ZINC01318589, CID66476, EINECS 201-346-7, EU-0039738, 3-Methyl-6-(p-toluidino)-3H-dibenz(f,ij)isoquinoline-2,7-dione, 3H-Dibenz(f,ij)isoquinoline-2,7-dione, 3-methyl-6-((4-methylphenyl)amino)-, 3H-Naphtho(1,2,3-de)quinoline-2,7-dione, 3-methyl-6-((4-methylphenyl)amino)-

Molecular Formula:	C₂₄H₁₈N₂O₂	Molecular Weight:	366.411920 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	3

InChIKey: VJUKWPOWHJITTP-UHFFFAOYSA-N

• 4,4'-(1,4-Anthraquinonylenediimino)bis[N-cyclohexyl-2-mesitylenesulfonamide]

IUPAC Name: N-cyclohexyl-3-[[4-[3-(cyclohexylsulfamoyl)-2,4,6-trimethylanilino]-9,10-dioxoanthracen-1-yl]amino]-2,4,6-trimethylbenzenesulfonamide | CAS Registry Number: 23552-74-1
Synonyms: EINECS 245-728-1, CID90157, 3,3'-((9,10-Dihydro-9,10-dioxo-1,4-anthrylene)diimino)bis(N-cyclohexyl-2,4,6-trimethylbenzenesulphonamide), 3,3'-((9,10-Dihydro-9,10-dioxoanthracene-1,4-diyl)bis(amino))bis(N-cyclohexyl-2,4,6-trimethylbenzenesulfonamide), 75317-36-1, Benzenesulfonamide, 3,3'-((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(N-cyclohexyl-2,4,6-trimethyl-

Molecular Formula:	C₄₄H₅₂N₄O₆S₂	Molecular Weight:	797.036880 [g/mol]
H-Bond Donor:	4	H-Bond Acceptor:	10

InChIKey: AYYCRXDSCYPSRP-UHFFFAOYSA-N

• 2-(4-Bromo-3-Hydroxy-2-Quinolinyl)-1,3-Indandione

IUPAC Name: 2-(4-bromo-3-hydroxyquinolin-2-yl)indene-1,3-dione | CAS Registry Number: 10319-14-9
Synonyms: C.I. DISPERSE YELLOW 64, CID25152, EINECS 233-701-7, 4-Bromo-3-hydroxy-2-(1,3-indandion-2-yl)quinoline, 2-(4-Bromo-3-hydroxy-2-quinolyl)-1H-indene-1,3(2H)-dione, 1H-Indene-1,3(2H)-dione, 2-(4-bromo-3-hydroxy-2-quinolinyl)-, 12223-86-8, 66565-57-9

Molecular Formula:	C₁₈H₁₀BrNO₃	Molecular Weight:	368.180900 [g/mol]
H-Bond Donor:	1	H-Bond Acceptor:	4

InChIKey: DVBLPJWQXDCAKU-UHFFFAOYSA-N

• 3-(diethylamino)-7-Oxo-7h-(1)benzopyrano(3',2':3,4)pyrido(1,2-A)benzIMIDAZOLE-6-Carbonitrile

Synonyms: EINECS 257-884-8, CID104184, 3-(Diethylamino)-7-oxo-7H-(1)benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile, 7H-(1)Benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile, 3-(diethylamino)-7-oxo-

Molecular Formula:	C₂₃H₁₈N₄O₂	Molecular Weight:	382.414620 [g/mol]
H-Bond Donor:	0	H-Bond Acceptor:	5

InChIKey: UTTFXJZCRVZYQF-UHFFFAOYSA-N

• 1-Amino-2-Bromo-4-Hydroxy Anthraquinone

IUPAC Name: 1-amino-2-bromo-4-hydroxyanthracene-9,10-dione | CAS Registry Number: 116-82-5
Synonyms: Sumkaron Red 3B, Latyl Red B, Sandoplast Red 2B, Resiren Red T 3B, C.I. Disperse Violet 17, EINECS 204-160-4, 1-Amino-2-bromo-4-hydroxyanthraquinone, Anthraquinone, 1-amino-2-bromo-4-hydroxy-, NSC 176660, BRN 1887275, NSC176660, ZINC03874025, 1-Amino-2-brom-4-hydroxyanthrachinon, 9,10-Anthracenedione, 1-amino-2-bromo-4-hydroxy-, WLN: L C666 BV IVJ DZ EE GQ, LS-20616, 1-Amino-2-brom-4-hydroxyanthrachinon [Czech], EU-0069935, 1-AMINO-2-BROMO-4-HYDROXY-9,10-ANTHRACENEDIONE, 4-14-00-00897 (Beilstein Handbook Reference)

Molecular Formula:	C₁₄H₈BrNO₃	Molecular Weight:	318.122220 [g/mol]
H-Bond Donor:	2	H-Bond Acceptor:	4

InChIKey: MSSQDESMUMSQEN-UHFFFAOYSA-N

• 4,11-Diamino-2-(3-Methoxypropyl)-1h-Naphth(2,3-F)isoindole-1,3,5,10(2h)-Tetrone

IUPAC Name: 4,11-diamino-2-(3-methoxypropyl)naphtho[2,3-f]isoindole-1,3,5,10-tetrone | CAS Registry Number: 12217-80-0
Synonyms: C.I. DISPERSE BLUE 60, CID25530, EINECS 235-402-7, ZINC02019889, 1,4-Diamino-N-(3-methoxypropyl)anthraquinone-2,3-dicarboximide, 1,4-Diaminoanthraquinon-N-gamma-methoxypropyl-2,3-dicarboximide, 1,4-Diamino-9,10-dihydro-N-(3-methoxypropyl)-9,10-dioxo-2,3-anthracenedicarboximide, 1H-Naphth(2,3-f)isoindole-1,3,5,10(2H)-tetrone, 4,11-diamino-2-(3-methoxypropyl)-, 4,11-Diamino-2-(3-methoxypropyl)-1H-naphth(2,3-f)isoindol-1,3,5,10(2H)-tetrone, 12222-94-5, 329320-45-8, 3316-13-0, 477217-10-0, 705249-99-6, 76416-97-2

Molecular Formula:	C₂₀H₁₇N₃O₅	Molecular Weight:	379.366080 [g/mol]
H-Bond Donor:	2	H-Bond Acceptor:	7

InChIKey: WBCXRDHKXHADQF-UHFFFAOYSA-N